Honestly looks pretty good. Couple of things I suggest_
1.Get some lower latency RAM for Ryzen, C30-32 and make sure its optimized for AMD/EXPO. It'll help a bit and wont cost you any more.
2. The SSD is a great deal and has DRAM cache which is very good for a boot drive, but there was some talk of it overheating during review which would give me pause. Maybe nothing but just a thought, thats a great price.
3. You dont need a 360 AIO for a 7800X3D, it uses less that 100W under most loads.
PCPartPicker Part List
CPU: AMD Ryzen 7 7800X3D 4.2 GHz 8-Core Processor ($358.94 @ Amazon)
CPU Cooler: ARCTIC Liquid Freezer II 240 56.3 CFM Liquid CPU Cooler ($97.99 @ Amazon)
Motherboard: MSI MAG B650 TOMAHAWK WIFI ATX AM5 Motherboard ($211.99 @ Amazon)
Memory: G.Skill Flare X5 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory ($104.99 @ Amazon)
Storage: Western Digital Black SN850X 2 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive ($139.99 @ Adorama)
Video Card: MSI VENTUS 3X OC GeForce RTX 4070 12 GB Video Card ($563.99 @ Amazon)
Case: Fractal Design Pop Air ATX Mid Tower Case ($79.99 @ B&H)
Power Supply: Corsair RM850x (2021) 850 W 80+ Gold Certified Fully Modular ATX Power Supply ($129.99 @ Amazon)
Total: $1687.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2023-12-02 11:59 EST-0500
Gets you a 4070 for the same price with some other improvements IMO.
The Arctic AIO's have slightly thicker radiators and a small VRM cooler on the CPU block which other manufacturers dont have. They tend to outperform other AIO's of similar size in tests because of the thicker rad. Might have to check dimension in some smaller cases though. Theres an RGB model for about $15 more.
Case is a good one, but a placeholder anyway. Always get something with mesh over a solid front for better cooling anyway, the Lian Li 216 is alright as well.